У меня возникли небольшие проблемы с выяснением того, как сохранить дату, взятую из UITextField
, в CoreData, а также сделать ее редактируемой, чтобы, когда пользователь возвращается к дате, они могли ее изменить. Вот код, который у меня есть до сих пор:
@IBOutlet weak var dateField: UITextField!
@IBAction func dateField(sender: UITextField) {
// This creates an Input View
let inputView = UIView(frame: CGRectMake(0, 0, self.view.frame.width, 240))
// This creates an Picker View for the date
let datePickerView : UIDatePicker = UIDatePicker(frame: CGRectMake(0, 40, 0, 0))
datePickerView.datePickerMode = UIDatePickerMode.Date
inputView.addSubview(datePickerView)
// Makes a toolbar with a done button at the top of of the date picker view for it to dismiss the moment its clicked
let doneButton = UIButton(frame: CGRectMake((self.view.frame.size.width/2) - (100/2), 0, 100, 50))
doneButton.setTitle("Done", forState: UIControlState.Normal)
doneButton.setTitle("Done", forState: UIControlState.Highlighted)
doneButton.setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)
doneButton.setTitleColor(UIColor.grayColor(), forState: UIControlState.Highlighted)
// Adds the done button to the datepicker
inputView.addSubview(doneButton)
doneButton.addTarget(self, action: "doneButton:", forControlEvents: UIControlEvents.TouchUpInside)
// Uses the date picker as a date picker using the format made in the function 'datePickerChanged'
sender.inputView = inputView
datePickerView.addTarget(self, action: Selector("datePickerChanged:"), forControlEvents: UIControlEvents.ValueChanged)
// Immediately sets a date on start
datePickerChanged(datePickerView)
}
func doneButton(sender : UIButton) {
dateField.resignFirstResponder()
}
func datePickerChanged(sender : UIDatePicker) {
// Creates a date sytle format for the date picker
let dateFormatter = NSDateFormatter()
dateFormatter.dateStyle = NSDateFormatterStyle.MediumStyle
dateFormatter.timeStyle = NSDateFormatterStyle.NoStyle
dateField.text = dateFormatter.stringFromDate(sender.date)
}
var dateSave : Product? = nil
let moc = (UIApplication.sharedApplication().delegate as! AppDelegate).managedObjectContext
if (dateSave != nil) {
let dateFormatter = NSDateFormatter()
var dateIn = dateFormatter.dateFromString(dateField.text!)
dateIn = dateSave?.date
}
func createProduct() {
// Creates an Entity Description for the Core Data
let entityDescription = NSEntityDescription.entityForName("dateSaved", inManagedObjectContext: moc)
let datesaved = dateSaved(entity: entityDescription!, insertIntoManagedObjectContext: moc)
// Creates Dates to save in coredata
let dateFormatter = NSDateFormatter()
var dateIn = dateFormatter.dateFromString(dateField.text!)
product.date = dateIn
do {
try moc.save()
} catch {
return
}
}
func editProduct() {
// this function is for the edited dates that were already created
let dateFormatter = NSDateFormatter()
var dateIn = dateFormatter.dateFromString(dateField.text!)
product?.date = dateIn
do {
try moc.save()
} catch {
return
}
}
func dismissTVC() {
navigationController?.popToRootViewControllerAnimated(true)
}
@IBAction func saveTapped(sender: AnyObject) {
if (product != nil) {
editProduct()
} else {
createProduct()
}
dismissTVC()
}
@IBAction func cancelTapped(sender: AnyObject) {
dismissTVC()
}